Study aim: The results of this study can be Determines whether the package of mindfulness designed to increase resilience, decrease the rumination, acceptance and improve the psychological symptoms of mothers of children with cancer is effective. In practical and practical terms, the results of this research can be used as an intervention to improve the psychological symptoms of mothers of children with cancer, while familiarizing researchers and therapists of the country with the theories, therapeutic approaches, and research areas. Existing, the effectiveness of this method as one of the newest methods of intervention in the treatment of parents of children with cancer in an Iranian sample. Design: They are available through a sampling method of 30 individuals. They were randomly drawn and drawn in two groups of intervention and control Placed. Settings and conduct: The statistical population includes mothers of children with cancer who are under treatment in the oncology section of Emam Hospital in Tehran. Participants/Inclusion and exclusion criteria: Mothers of children with cancer Intervention groups: 30 mothers were randomly selected and assigned to intervention and control group. After pre-test and responding to the questionnaires, the intervention group received mindfulness therapy during 8 90-minute sessions (based on the instructions). The protocol also allows for two sessions per week to be completed, which can be completed for one month). While the control group will not receive any treatment, after the end of the sessions, a two-month follow up will be conducted to measure the efficacy of the treatment at a specified time in both groups. Finally, in order to observe ethical principles in the research, the knowledge of mind will be provided to the control group. Main outcome variables: Mindfulness; Resiliency; Rumination; Acceptance; Mothers; Cancerous Children